The TPS78825 and TPS78833 are very small (SOT-23) package, low-noise LDOs that regulate the output voltage to 2.5 V and 3.3 V with input voltage ranging from 2.7 V to an absolute maximum of 13.5 V. These devices output 150 mA with a peak current of 350 mA (typ). The TPS788xx family uses the SR pin to program the output voltage slew rate to control the in-rush current. This is specifically used in the USB application where large load capacitance is present at start-up. The TPS788xx devices use only 17 uA of quiescent current and exhibit only 56 uV RMS of output voltage noise using a 10 uF output capacitor.
The usual PNP pass transistor has been replaced by a PMOS pass element. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low, typically 150 mV at 150 mA of load current, and is directly proportional to the load current.
The TPS788xx also features a logic-enabled sleep mode to shut down the regulator, reducing quiescent current to 1 uA typical at TJ = 25°C.
|Part number||Order||Output options||Iout (Max) (A)||Vin (Max) (V)||Vin (Min) (V)||Vout (Max) (V)||Vout (Min) (V)||Fixed output options (V)||Package Group||Features||Regulated outputs (#)||Operating temperature range (C)||Thermal resistance θJA (°C/W)||Noise (uVrms)||Approx. price (US$)||Rating||Output capacitor type||PSRR @ 100 KHz (dB)||Accuracy (%)||Vdo (Typ) (mV)||Iq (Typ) (mA)||Package size: mm2:W x L (PKG)|
|SOT-23 | 5||
|1||0 to 70||180||56||0.43 | 1ku||Catalog||Non-Ceramic||25||3||150||0.017||5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)|